I'm having a problem with my 2003 Seat Toledo with a gasoline engine. It has about 145397 km on it. The check engine light is on, and the engine power is noticeably reduced. I suspect it might be a defective throttle valve. Could it be the accelerator pedal module or maybe something with the electronics? I've read something about the throttle sensor too.

Seat Toledo engine power loss

Sounds familiar. I had a similar problem with my Toledo some time ago. Reduced engine power and the check engine light kept popping up. Did you notice any response delay when pressing the accelerator pedal?

Response delay, yes, now that you mention it. It's not immediate when I press the gas pedal. What was the issue with yours?

Yep, same symptoms. For me, it turned out to be a faulty throttle body, specifically the throttle sensor inside it. The car went into limp mode a few times. I'd suggest getting it checked out by a mechanic to confirm. They'll probably check the air intake too.

Thanks for the insight. I went to the workshop and they confirmed it was the throttle body. It cost me 265€ to get it sorted, but the Toledo is running smoothly again. No more limp mode.